JPS5518659A - Electrophotographic developing method - Google Patents

Electrophotographic developing method

Info

Publication number
JPS5518659A
JPS5518659A JP9210878A JP9210878A JPS5518659A JP S5518659 A JPS5518659 A JP S5518659A JP 9210878 A JP9210878 A JP 9210878A JP 9210878 A JP9210878 A JP 9210878A JP S5518659 A JPS5518659 A JP S5518659A
Authority
JP
Japan
Prior art keywords
sleeve
toner
gap
developing
alternating field
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP9210878A
Other languages
Japanese (ja)
Other versions
JPS5832377B2 (en
Inventor
Junichiro Kanbe
Tsutomu Toyono
Nagao Hosono
Toru Takahashi
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Canon Inc
Original Assignee
Canon Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Canon Inc filed Critical Canon Inc
Priority to JP53092108A priority Critical patent/JPS5832377B2/en
Priority to US06/058,435 priority patent/US4292387A/en
Priority to CA000332064A priority patent/CA1142804A/en
Priority to AU49115/79A priority patent/AU530517B2/en
Priority to GB7925724A priority patent/GB2030478B/en
Priority to DE2954572A priority patent/DE2954572C2/de
Priority to FR7919483A priority patent/FR2433781B1/en
Priority to DE19792930595 priority patent/DE2930595A1/en
Publication of JPS5518659A publication Critical patent/JPS5518659A/en
Priority to US06/426,979 priority patent/US4473627A/en
Publication of JPS5832377B2 publication Critical patent/JPS5832377B2/en
Expired legal-status Critical Current

Links

Landscapes

  • Magnetic Brush Developing In Electrophotography (AREA)
  • Developing For Electrophotography (AREA)
  • Dry Development In Electrophotography (AREA)

Abstract

PURPOSE: To enhance thee reproducibility of picture image end part and improve the gradient, by developing while turning an electrostatic image holder and a sleeve to carry the toner in the same direction and at a roughly same speed, with a gap being maintained between the two, and applying alternating field less than 1kHz in frequency.
CONSTITUTION: A photosensitive drum 11, and a nonmagnetic sleeve 12 enveloping a magnet inside are opposedly provided, keeping a gap larger than the thickness of the toner layer which carries the sleeve 12, and a bias in the phase of a specific polarity is applied. In the developing gap, the toner is caused to reach the picture image part and non-picutre image part of the sensitive drum 11 from the sleeve, and an alternating field in the phase of reverse polarity is applied to return the toner reaching the non-picture image part to the sleeve 12 side. In such developing unit, the both members 11 and 12 are rotated in the same direction at an equal speed, and an alternating field of which frequency is less than 1kHz is applied to the developing gap. In this process, the development is carried out at the same time.
COPYRIGHT: (C)1980,JPO&Japio
JP53092108A 1978-07-28 1978-07-28 developing device Expired JPS5832377B2 (en)

Priority Applications (9)

Application Number Priority Date Filing Date Title
JP53092108A JPS5832377B2 (en) 1978-07-28 1978-07-28 developing device
US06/058,435 US4292387A (en) 1978-07-28 1979-07-18 Magnetic developing method under A.C. electrical bias and apparatus therefor
CA000332064A CA1142804A (en) 1978-07-28 1979-07-18 Developing method for developer transfer under electrical bias and apparatus therefor
AU49115/79A AU530517B2 (en) 1978-07-28 1979-07-20 Developing with an electrical bias
GB7925724A GB2030478B (en) 1978-07-28 1979-07-24 Developing method for developer transfer under electrical bias
DE2954572A DE2954572C2 (en) 1978-07-28 1979-07-27
FR7919483A FR2433781B1 (en) 1978-07-28 1979-07-27 DEVELOPMENT METHOD WITH TRANSFER OF DEVELOPING AGENT BY ELECTRIC POLARIZATION FIELD AND APPARATUS FOR CARRYING OUT SAID METHOD
DE19792930595 DE2930595A1 (en) 1978-07-28 1979-07-27 METHOD FOR DEVELOPING A LATENT IMAGE AND DEVICE THEREFOR
US06/426,979 US4473627A (en) 1978-07-28 1982-09-29 Developing method for developer transfer under electrical bias and apparatus therefor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP53092108A JPS5832377B2 (en) 1978-07-28 1978-07-28 developing device

Related Child Applications (2)

Application Number Title Priority Date Filing Date
JP57127026A Division JPS5837657A (en) 1982-07-21 1982-07-21 Developing method and its apparatus
JP14337189A Division JPH02191973A (en) 1989-06-06 1989-06-06 Developing device

Publications (2)

Publication Number Publication Date
JPS5518659A true JPS5518659A (en) 1980-02-08
JPS5832377B2 JPS5832377B2 (en) 1983-07-12

Family

ID=14045228

Family Applications (1)

Application Number Title Priority Date Filing Date
JP53092108A Expired JPS5832377B2 (en) 1978-07-28 1978-07-28 developing device

Country Status (1)

Country Link
JP (1) JPS5832377B2 (en)

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56154769A (en) * 1980-05-02 1981-11-30 Canon Inc Developing device
JPS58186768A (en) * 1982-04-24 1983-10-31 Canon Inc Developing device
JPS59181362A (en) * 1983-03-31 1984-10-15 Konishiroku Photo Ind Co Ltd Developing method
JPS59222852A (en) * 1983-06-02 1984-12-14 Konishiroku Photo Ind Co Ltd Developing method
JPS6014263A (en) * 1983-07-06 1985-01-24 Canon Inc Developing device
JPS63149668A (en) * 1986-12-15 1988-06-22 Canon Inc Contact electric charging method
JPS63237078A (en) * 1987-03-26 1988-10-03 Toshiba Corp Recorder
US5157483A (en) * 1987-06-22 1992-10-20 Konica Corporation Multicolor image forming method and apparatus
US5175070A (en) * 1989-09-27 1992-12-29 Canon Kabushiki Kaisha Image forming method and image forming apparatus
US5202731A (en) * 1989-09-27 1993-04-13 Canon Kabushiki Kaisha Image forming apparatus having an alternating bias electric field
US5219695A (en) * 1989-11-22 1993-06-15 Canon Kabushiki Kaisha Image forming method
US5310615A (en) * 1989-12-12 1994-05-10 Canon Kabushiki Kaisha Image forming method
US5338894A (en) * 1990-09-21 1994-08-16 Canon Kabushiki Kaisha Image forming method with improved development
US5348829A (en) * 1991-11-08 1994-09-20 Canon Kabushiki Kaisha Monocomponent-type developer for developing electrostatic image and image forming method
US5610690A (en) * 1993-08-30 1997-03-11 Canon Kabushiki Kaisha Electrophotographic apparatus and process cartridge featuring an electrophotographic photosensitive member having a surface layer of lubricative fluorine-containing resin powder
USRE35581E (en) * 1986-12-15 1997-08-12 Canon Kabushiki Kaisha Charging device
US8374530B2 (en) 2005-07-25 2013-02-12 Afit Corporation Methods and apparatus for developing an electrostatic latent image using conductive particles
JP2020112719A (en) * 2019-01-15 2020-07-27 富士ゼロックス株式会社 Image forming apparatus

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61158784U (en) * 1985-03-25 1986-10-01
JP2004219640A (en) 2003-01-14 2004-08-05 Seiko Epson Corp Image forming method

Cited By (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56154769A (en) * 1980-05-02 1981-11-30 Canon Inc Developing device
JPS58186768A (en) * 1982-04-24 1983-10-31 Canon Inc Developing device
JPH0454954B2 (en) * 1982-04-24 1992-09-01 Canon Kk
JPS59181362A (en) * 1983-03-31 1984-10-15 Konishiroku Photo Ind Co Ltd Developing method
JPS59222852A (en) * 1983-06-02 1984-12-14 Konishiroku Photo Ind Co Ltd Developing method
JPH0527860B2 (en) * 1983-07-06 1993-04-22 Canon Kk
JPS6014263A (en) * 1983-07-06 1985-01-24 Canon Inc Developing device
JPS63149668A (en) * 1986-12-15 1988-06-22 Canon Inc Contact electric charging method
JPH0352058B2 (en) * 1986-12-15 1991-08-08 Canon Kk
USRE35581E (en) * 1986-12-15 1997-08-12 Canon Kabushiki Kaisha Charging device
JPS63237078A (en) * 1987-03-26 1988-10-03 Toshiba Corp Recorder
US5157483A (en) * 1987-06-22 1992-10-20 Konica Corporation Multicolor image forming method and apparatus
US5175070A (en) * 1989-09-27 1992-12-29 Canon Kabushiki Kaisha Image forming method and image forming apparatus
US5202731A (en) * 1989-09-27 1993-04-13 Canon Kabushiki Kaisha Image forming apparatus having an alternating bias electric field
US5219695A (en) * 1989-11-22 1993-06-15 Canon Kabushiki Kaisha Image forming method
US5298950A (en) * 1989-11-22 1994-03-29 Canon Kabushiki Kaisha Image forming apparatus
US5310615A (en) * 1989-12-12 1994-05-10 Canon Kabushiki Kaisha Image forming method
US5338894A (en) * 1990-09-21 1994-08-16 Canon Kabushiki Kaisha Image forming method with improved development
US5504272A (en) * 1990-09-21 1996-04-02 Canon Kabushiki Kaisha Magnetic toner having defined particle distribution
US5348829A (en) * 1991-11-08 1994-09-20 Canon Kabushiki Kaisha Monocomponent-type developer for developing electrostatic image and image forming method
US5610690A (en) * 1993-08-30 1997-03-11 Canon Kabushiki Kaisha Electrophotographic apparatus and process cartridge featuring an electrophotographic photosensitive member having a surface layer of lubricative fluorine-containing resin powder
US8374530B2 (en) 2005-07-25 2013-02-12 Afit Corporation Methods and apparatus for developing an electrostatic latent image using conductive particles
JP2020112719A (en) * 2019-01-15 2020-07-27 富士ゼロックス株式会社 Image forming apparatus

Also Published As

Publication number Publication date
JPS5832377B2 (en) 1983-07-12

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